荞麦基因型间的耐铝性研究(英文)

Research on Al^(3+) Tolerance among Different Buckwheat Genotypes

[目的]筛选出耐铝性较强的荞麦资源。[方法]用水培法对25份荞麦资源的耐铝性进行研究。以发芽的荞麦种子在3d内的根伸长量衡量耐铝性程度。[结果]低浓度(500μmol/L以下)的AlCl3处理对荞麦根系的生长具有明显的促进作用,而高浓度(1000μmol/L)的AlCl3处理则会抑制荞麦根系的生长。荞麦基因型间的耐铝性具有明显差异。[结论]在所选取的25份荞麦材料中,L2081和T442的耐铝胁迫能力最强,值得在荞麦耐铝性育种和耐铝机制的研究中开发利用。

[Objective] The research aimed to select the buckwheat accessions with higher Al3＋ tolerance.[Method]25 buckwheat accessions were used as materials,the Al3＋ tolerance were studied by means of solution culture method in this research.The length of root was used to evaluate the degree of Al3＋ tolerance.[Result]The root growth of some buckwheat accessions were significantly promoted under the concentration of 500 μmol/L,while high concentration of Al3＋（1 000 μmol/L）inhibited the buckwheat roots growth.There were great variations of Al3＋ tolerance among the different buckwheat genotypes.[Conclusion]Among the 25 buckwheat genotypes,L2081 and T442 had much higher Al3＋ tolerance than the others,which could be used for research on the buckwheat breeding and the mechanism of the buckwheat Al3＋ tolerance.